<head>
  <meta name="viewport" content="width=device-width; initial-scale=1.0">
  <title>Wheel-scrolling over position:fixed and position:sticky elements, in the top-level document as well as iframes</title>
  <script type="application/javascript" src="apz_test_native_event_utils.js"></script>
  <script type="application/javascript" src="apz_test_utils.js"></script>
  <script type="application/javascript" src="/tests/SimpleTest/paint_listener.js"></script>
  <script type="application/javascript">

function* test(testDriver) {
  var iframeWin = document.getElementById('iframe').contentWindow;

  // scroll over the middle of the iframe's position:sticky element, check
  // that it scrolls the iframe
  var scrollPos = iframeWin.scrollY;
  yield moveMouseAndScrollWheelOver(iframeWin.document.body, 50, 150, testDriver);
  ok(iframeWin.scrollY > scrollPos, "iframe scrolled after wheeling over the position:sticky element");

  // same, but using the iframe's position:fixed element
  scrollPos = iframeWin.scrollY;
  yield moveMouseAndScrollWheelOver(iframeWin.document.body, 250, 150, testDriver);
  ok(iframeWin.scrollY > scrollPos, "iframe scrolled after wheeling over the position:fixed element");

  // same, but scrolling the scrollable frame *inside* the position:fixed item
  var fpos = document.getElementById('fpos_scrollable');
  scrollPos = fpos.scrollTop;
  yield moveMouseAndScrollWheelOver(fpos, 50, 150, testDriver);
  ok(fpos.scrollTop > scrollPos, "scrollable item inside fixed-pos element scrolled");
  // wait for it to layerize fully and then try again
  yield waitForAllPaints(function() {
    flushApzRepaints(testDriver);
  });
  scrollPos = fpos.scrollTop;
  yield moveMouseAndScrollWheelOver(fpos, 50, 150, testDriver);
  ok(fpos.scrollTop > scrollPos, "scrollable item inside fixed-pos element scrolled after layerization");

  // same, but using the top-level window's position:sticky element
  scrollPos = window.scrollY;
  yield moveMouseAndScrollWheelOver(document.body, 50, 150, testDriver);
  ok(window.scrollY > scrollPos, "top-level document scrolled after wheeling over the position:sticky element");

  // same, but using the top-level window's position:fixed element
  scrollPos = window.scrollY;
  yield moveMouseAndScrollWheelOver(document.body, 250, 150, testDriver);
  ok(window.scrollY > scrollPos, "top-level document scrolled after wheeling over the position:fixed element");
}

waitUntilApzStable()
.then(runContinuation(test))
.then(subtestDone);

  </script>
</head>
<body style="height:5000px; margin:0">
  <div style="position:sticky; width: 100px; height: 300px; top: 0; background-color:red">sticky</div>
  <div style="position:fixed; width: 100px; height: 300px; top: 0; left: 200px; background-color: green">fixed</div>
  <iframe id='iframe' width="300" height="400" src="data:text/html,<body style='height:5000px; margin:0'><div style='position:sticky; width:100px; height:300px; top: 0; background-color:red'>sticky</div><div style='position:fixed; right:0; top: 0; width:100px; height:300px; background-color:green'>fixed</div>"></iframe>

  <div id="fpos_scrollable" style="position:fixed; width: 100px; height: 300px; top: 0; left: 400px; background-color: red; overflow:scroll">
   <div style="background-color: blue; height: 1000px; margin: 3px">scrollable content inside a fixed-pos item</div>
  </div>
</body>
</head>
